Studying and Optimizing the Effect of Process Parameters on Machining Vibration in Turning Process of AISI 1040 Steel

Table 7

Estimated regression coefficients for chip frequency.

Term	Coef.	value
Constant	−3144	0.041
A	−4963	0.033
B	8211	0.037
C	−991	0.052
A^2	−1997	0.001
B^2	−677	0.127
C^2	11417	0.001
A B	−6495
A C	−9595	0.005
B C	14652	0.009